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File: //usr/local/lib/php/docs/HTML_QuickForm2/examples/js/hierselect-server.php
<?php
/**
 * Usage example for HTML_QuickForm2 package: AJAX-backed hierselect element, AJAX server
 */

require_once 'HTML/AJAX/Server.php';
require_once '../support/hierselect-loader.php';

$server = new HTML_AJAX_Server();
$server->registerClass(new OptionLoader(), 'OptionLoader', array('getOptionsAjax'));
$server->handleRequest();
?>